Haley Best Seller is a novel written by Alex Haley, an American author. The novel was published in 1976 and is based on Haley's family history, tracing his African-American ancestors from the mid-18th century to the Reconstruction era. The novel was a bestseller and won the 1977 Pulitzer Prize for Fiction. The title of the novel is derived from the five-letter word 'ROOTS', which is the main theme of the book.